nrf52832 radio test with internal clock (Rigado BMD-350)

RE: nrf52832 radio test with internal clock (Rigado BMD-350)

Andrea p — Fri, 21 Feb 2020 13:32:39 GMT

I'm using a Segger j-link USB

Thank you very much for your support!

RE: nrf52832 radio test with internal clock (Rigado BMD-350)

Andreas — Fri, 21 Feb 2020 10:31:37 GMT

Hi,

Well, yes, it basically means the 32 MHz crystal is used as source for the on-chip oscillator and radio.

What kind of J-Link device are you using? The RSSI viewer app might only support nRF DKs.

Best regards,

Andreas

RE: nrf52832 radio test with internal clock (Rigado BMD-350)

Andrea p — Fri, 21 Feb 2020 10:17:21 GMT

Hi Andreas,

I added the

// Start 64 MHz crystal oscillator.
NRF_CLOCK->EVENTS_HFCLKSTARTED = 0;
NRF_CLOCK->TASKS_HFCLKSTART = 1;

// Wait for the external oscillator to start up.
while (NRF_CLOCK->EVENTS_HFCLKSTARTED == 0)
{
// Do nothing.
}

I thought this was meant for the external oscillator.

Windows10, though, is not able to communicate with the RSSI Viewer. The program is seeing the JLink connected to a different BMD350, but is saying that is not able to upload/validate the firmware of the different RTT-connected BMD-350.

RE: nrf52832 radio test with internal clock (Rigado BMD-350)

Andreas — Fri, 21 Feb 2020 09:13:30 GMT

Hi Andrea (nice name by the way),

I do not see you starting the HFXO anywhere, this needs to be running for the frequency synthesizer to be accurate. If not running, could you add that?

For verification during troubleshooting you can use the RSSI Viewer application in nRF Connect for Desktop.

Best regards,

Andreas